A building 84 ft high casts a 231-ft shadow. Sarah casts a 11-ft shadow. The triangle formed by the building and its shadow is similar to the triangle formed by Sarah and her shadow. How tall is Sarah?

a) 4 feet

b) 3 feet

c) 6 feet

d) 5 feet

Raise the following fractions to higher terms 2/9 = 8/? and 3/7 = 15/?

True-False: If you buy a raffle ticket and there is only one prize available, you can double your probability of winning that prize by buying two tickets.

The dolphins at the Logan Aquarium are fed 3 7/8 buckets of fish each day. The sea otters are fed 2 9/10 times as much fish as the dolphins. How many buckets of fish are the sea otters fed each day?

What is the answer to P=NP?

Not an 8, or a heart

The selling price of a refrigerator, is $463.05. If the markup is 5% of the dealer's cost, what is the dealer's cost of the refrigerator?

10% as a fraction in simplest form

On a 15-hour trip Rob drove 35%of the time and Mark drove the remainder of the time how many hours did Mark drive?

True or false a digit in one place represents one tenth of what the same digit represents two places to the left. explain why

These are lines that intersect to form right angles. Example: The formed by x-axis and the y-axis, a line with a slope of 3 and another line with a slope of - 1/3, the sides of a rectangle, and the sides of a square form this kind of line or segment.